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author | Torsten Bögershausen <tboegi@web.de> | 2019-01-20 08:53:50 +0100 |
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committer | Junio C Hamano <gitster@pobox.com> | 2019-01-28 11:25:16 -0800 |
commit | e62e225ffb589e59c4f64d90b0a393aa6a0a5ace (patch) | |
tree | 156f9146780713c27472873ee8d0e7e68714b6a1 /Documentation/technical/api-submodule-config.txt | |
parent | Git 2.20.1 (diff) | |
download | tgif-e62e225ffb589e59c4f64d90b0a393aa6a0a5ace.tar.xz |
test-lint: only use only sed [-n] [-e command] [-f command_file]
From `man sed` (on a Mac OS X box):
The -E, -a and -i options are non-standard FreeBSD extensions and may not be available
on other operating systems.
From `man sed` on a Linux box:
REGULAR EXPRESSIONS
POSIX.2 BREs should be supported, but they aren't completely because of
performance problems. The \n sequence in a regular expression matches the newline
character, and similarly for \a, \t, and other sequences.
The -E option switches to using extended regular expressions instead; the -E option
has been supported for years by GNU sed, and is now included in POSIX.
Well, there are still a lot of systems out there, which don't support it.
Beside that, IEEE Std 1003.1TM-2017, see
http://pubs.opengroup.org/onlinepubs/9699919799/
does not mention -E either.
To be on the safe side, don't allow -E (or -r, which is GNU).
Change check-non-portable-shell.pl to only accept the portable options:
sed [-n] [-e command] [-f command_file]
Reported-by: SZEDER Gábor <szeder.dev@gmail.com>
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Helped-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Torsten Bögershausen <tboegi@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'Documentation/technical/api-submodule-config.txt')
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